12. At the start of the platinium based induction chemotherapy measurable lesions by RECIST v1.1 criteria, i.e. at least one lesion, not previously irradiated, that can be accurately measured at baseline as ≥ 10mm in the longest diameter (except lymph nodes that must have short axis ≥ 15mm) with computed tomography (CT), magnetic resonance imaging (MRI) or clinical examination and which is suitable for accurate repeated measurements.